Natyashastra
ऊर्ध्वमुल्लोकितं ज्ञेयमवलोकितमप्यधः । इत्येषु दर्शनविधिः सर्वभावरसाश्रयः ॥ ११०॥
Ullokita (looking up)—(turning the eyeballs) upwards. Avalokita (looking down)—(turning the eyeballs) towards the ground. These are the gestures of eyaballs in relation to all the Sentiments and the States.
english translation
UrdhvamullokitaM jJeyamavalokitamapyadhaH । ityeSu darzanavidhiH sarvabhAvarasAzrayaH ॥ 110॥
hk transliteration by Sanscript